The LITe® Plate System Universal, Sacral, 2 Screw and 4 Screw Plates are indicated for use via a lateral or anterolateral surgical approach above the bifurcation of the great vessels in the thoracic and thoracolumbar (T1-L5) spine or via an anterior approach below the bifurcation of the great vessels in the treatment of lumbar and lumbosacral (L1-S1) spine. The system is intended to provide additional support during fusion in skeletally mature patients in the treatment of the following acute and chronic instabilities or deformities: Degenerative Disc Disease (defined as back pain of discogenic origin with degeneration of the disc confirmed by patient history and radiographic studies); Pseudoarthrosis; Spondylolysis; Spondylolisthesis; Spinal stenosis; Tumors; Trauma (i.e. Fractures or Dislocation); Deformities (i.e. Scoliosis, Kyphosis or Lordosis); Failed Previous Fusion. The LITe® Plate System Buttress Plate is intended to stabilize the allograft or autograft at one level (T1-S1) as an aid to spinal fusion and to provide temporary stabilization and augment development of a solid spinal fusion. It may be used alone or with other anterior, anterolateral, or posterior spinal systems made of compatible materials. This device is not intended for load bearing applications.
Device Story
LITe® Plate System is an anterior/anterolateral/lateral spinal fixation system; consists of titanium alloy plates and screws; used in thoracic, lumbar, and sacral spine (T1-S1). Device provides additional support during spinal fusion; buttress plate stabilizes allograft/autograft at one level. System used by surgeons in clinical settings; implants available in various sizes to match patient anatomy. Device functions as mechanical fixation; does not involve electronic processing or software. Clinical benefit includes stabilization of spinal segments to facilitate fusion in patients with acute/chronic instabilities or deformities.
Clinical Evidence
Bench testing only. Testing included static and dynamic compression testing per ASTM F1717-14, static torsion testing per ASTM F1717-14, and buttress plate expulsion testing. No clinical data provided.
Technological Characteristics
Materials: Titanium alloy (Ti6Al4V) per ASTM F136 and ISO 5832-3. Components: Plates and screws of various sizes. Principle: Mechanical spinal fixation/stabilization. Energy source: None (manual instrumentation). Connectivity: None. Sterilization: Not specified.
Indications for Use
Indicated for skeletally mature patients requiring spinal fusion support in the thoracic, thoracolumbar, lumbar, or lumbosacral spine (T1-S1) for conditions including degenerative disc disease, pseudoarthrosis, spondylolysis, spondylolisthesis, spinal stenosis, tumors, trauma (fractures/dislocation), deformities (scoliosis, kyphosis, lordosis), or failed previous fusion. Buttress plate indicated for stabilization of allograft/autograft at one level (T1-S1) as an aid to fusion; not for load-bearing.
Regulatory Classification
Identification
A spinal intervertebral body fixation orthosis is a device intended to be implanted made of titanium. It consists of various vertebral plates that are punched into each of a series of vertebral bodies. An eye-type screw is inserted in a hole in the center of each of the plates. A braided cable is threaded through each eye-type screw. The cable is tightened with a tension device and it is fastened or crimped at each eye-type screw. The device is used to apply force to a series of vertebrae to correct “sway back,” scoliosis (lateral curvature of the spine), or other conditions.
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Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized image of an eagle with three human profiles incorporated into its design. The words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" are arranged in a circular pattern around the eagle.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
December 31, 2014
Stryker Spine Garry Haveck, Ph.D. Senior Regulatory Affairs Specialist 2 Pearl Court Allendale, New Jersey 07401
Re: K142699
Trade/Device Name: LITe® Plate System Regulation Number: 21 CFR 888.3060 Regulation Name: Spinal Intervertebral Body Fixation Orthosis Regulatory Class: Class II Product Code: KWQ Dated: October 2, 2014 Received: October 6, 2014
Dear Dr. Hayeck:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set
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forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours,
# Mark N. Melkerson -S
Mark N. Melkerson Director Division of Orthopedic Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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## Indications for Use
510(k) Number (if known)
K142699
Device Name LITe(R) Plate System
## Indications for Use (Describe)
The LITe® Plate System Universal, Sacral, 2 Screw and 4 Screw Plates are indicated for use via a lateral or anterolateral surgical approach above the bifurcation of the great vessels in the thoracic and thoracolumbar (TI-LS) spine or via an anterior approach below the bifureation of the great vessels in the treatment of lumbosacral (L1-S1) spine. The system is intended to provide additional support during fusion in skeletally mature patients in the treatment of the following acute and chronic instabilities or deformities: Degenerative Disc Discase (defined as back pain of discogenic origin with degeneration of the disc confirmed by patient history and radiographic studies); Pseudoarthrosis; Spondylolysis; Spondylolisthesis; Spinal stenosis; Tumors; Trauma (i.e. Fractures or Dislocation); Deformities (i.e. Scoliosis, Kyphosis or Lordosis); Failed Previous Fusion
The LITe® Plate System Buttress Plate is intended to stabilize the allograft at one level (T1-S1) as an aid to spinal fusion and to provide temporary stabilization and augment of a solid spinal fusion. It may be used alone or with other anterior, anterolateral, or posterior spinal systems made of compatible materials. This device is not intended for load bearing applications.
Type of Use (Select one or both, as applicable)
Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
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| | 510(k) Summary: LITe® Plate System |
|----------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Submitter: | Stryker Spine<br>2 Pearl Court<br>Allendale, New Jersey 07401 |
| Contact Person | Garry T. Hayeck, Ph.D.<br>Senior Regulatory Affairs Specialist<br>Phone: 201-760-8043<br>Fax: 201-962-4043<br>E-mail: garry.hayeck@stryker.com |
| Date Prepared | December 31, 2014 |
| Trade Name | LITe® Plate System |
| Common Name | Appliance, fixation, spinal intervertebral body |
| Proposed Class | Class II |
| Classification Name<br>and Number | Spinal intervertebral body fixation orthosis<br>21 CFR §888.3060 |
| Product Code | KWQ |
| Predicate Devices | Primary Predicate: Stryker Spine, CENTAUR™ Spinal System, K001844 |
| | Additional Predicates: |
| | Universal, Sacral, 2 Screw, and 4 Screw Plates |
| | • Stryker Spine, CENTAUR™ Spinal System, K994347 |
| | • Medtronic, PYRAMID® +4 Anterior Lumbar Plate System, K080429 |
| | • NuVasive, Lateral Plate System, K091071 |
| | • Spinal USA, Anterior Lumbar Plate System, K091044 |
| | • Globus Medical, CITADEL™ Anterior Lumbar Plate System, K062836 |
| | • Stryker Spine, THOR Anterior Lumbar Plate, K080773 |
| | Buttress Plate |
| | • Spinal USA, RCS Anterior Buttress Plate, K092659 |
| | • Spinal USA, Anterior Lumbar Plate System, K091044 |
| | • Stryker Spine, THOR Anterior Lumbar Plate, K080773 |
| Device Description | The LITe® Plate System is an anterior/anterolateral/lateral plate system<br>that may be used in the thoracic, lumbar, and sacral spine (T1-S1). The<br>LITe® Plate System consists of plates and screws manufactured from<br>titanium alloy (Ti6Al4V) per ASTM F136 and ISO 5832-3, as well as<br>associated manual general surgical instrumentation. The implants are<br>available in a variety of sizes to accommodate various patient<br>anatomies. |
| Intended Use | The LITe® Plate System Universal, Sacral, 2 Screw and 4 Screw Plates are<br>indicated for use via a lateral or anterolateral surgical approach above<br>the bifurcation of the great vessels in the treatment of the thoracic and<br>thoracolumbar (T1-L5) spine or via an anterior approach below the<br>bifurcation of the great vessels in the treatment of lumbar and<br>lumbosacral (L1-S1) spine. The system is intended to provide additional<br>support during fusion in skeletally mature patients in the treatment of the<br>following acute and chronic instabilities or deformities:<br>• Degenerative Disc Disease (defined as back pain of discogenic<br>origin with degeneration of the disc confirmed by patient history |
| 510(k) Summary: LITe® Plate System | |
| | Pseudoarthrosis; Spondylolysis; Spondylolisthesis; Spinal stenosis; Tumors; Trauma (i.e. Fractures or Dislocation) Deformities (i.e. Scoliosis, Kyphosis or Lordosis) Failed Previous Fusion |
| | The LITe® Plate System Buttress Plate is intended to stabilize the allograft<br>or autograft at one level (T1-S1) as an aid to spinal fusion and to provide<br>temporary stabilization and augment development of a solid spinal<br>fusion. It may be used alone or with other anterior, anterolateral, or<br>posterior spinal systems made of compatible materials. This device is not<br>intended for load bearing applications. |
| Summary of the<br>Technological<br>Characteristics | As established in this submission, the LITe® Plate System was shown to<br>be substantially equivalent and have equivalent technological<br>characteristics to its predicate devices through comparison in areas<br>including intended use, material composition, principles of operation<br>and design. |
| Summary of the<br>Performance Data | Nonclinical testing was performed to demonstrate that the LITe® Plate<br>System is substantially equivalent to its predicate devices. The following<br>testing and analysis was performed: Static and dynamic compression testing per ASTM F1717-14 Static torsion testing per ASTM F1717-14 Buttress plate expulsion testing |
| Conclusions | The LITe® Plate System has identical indications, technological<br>characteristics, and principles of operation as its predicates. The non-<br>clinical test results demonstrate that any minor differences do not<br>impact device performance as compared to the predicates. The LITe®<br>Plate System was shown to be substantially equivalent to its predicate<br>devices. |
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1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
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Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
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Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
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With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
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What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
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Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.